宫颈癌得预防针有必要打吗？

来自孙丽芳医生的专业解答，快打开看看是否又获得了新的知识点～

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快速问医生

病情分析：九价HPV疫苗推荐用于9-45岁女性。对于已经有性生活或者HPV暴露的女性，接种后免疫效果下降，HPV疫苗共注射3次，即开始时为第1次，2个月后注射第2次，第1次注射6个月后注射第3次。

孙丽芳

主任医师

提示：本内容仅作参考，不能代替面诊，如有不适请尽快线下就医

问题描述：23岁。女。未婚。有性生活。听说有预防宫颈癌的预防针？有必要打嘛。打几针？打了有用吗？可以管多久